Grate.



vW. R. JEA VONS & A. R. WHITTAKER.

GRATE. APPLICATION FILED MAYl, 1912.

Patented Nov. 25, 1913.

FIE- J UNITED STATES PArENT OFFICE.

WILLIAM R. JEAVONS AND ARNOLD R. WI-I ITTAKER, F CLEVELAND, OHIO.

Specification of Letters Patent.

Patented Nov. 25, 1913.

To all whom it may concern Be it known that we, WILLrAM R. J EAvoNs andARNOLD R. WHITTAKER, citizens of the United States, residing at countyof Cuyahoga and State of Ohio, have invented a certain new and usefulImprovement in Grates, of which the following is a full, clear, andexact description, reference being had to the accompanylng drawings.

This invention relates to grates for gas or vapor stoves and has for itsobject to provide a structure of this kind which is light and yet verystrong, durable, and amply capable of withstanding alike both theordinary and the extraordinary, incidents of use.

Grates of the kind referred to are usually cast and comprise one or morerings with radially extending ribs'connecting said rings and extendingbeyond the same, the parts being cast in one piece. Grates as thusconstructed are brittle and extremely liable to break. By theconstruction of grate described and illustrated herein, it is possible,with the employment of less material than is used in the cast gratesreferred to, to provide a grate which is far stronger and is no moreexpensive of production than the relatively ineflicient gratesheretofore in use. We secure this result by the construction set forthherein and illustrated in the drawings forming part hereof, wherein 1Figure 1 represents a plan view of a grate constructed in accordancewith our invention; Fig. 2 is a sectional view corresponding to the line22 of Fig. 1; Fig. 3 an enlarged sectional detail showing the manner inwhich the rings and ribs may be assembled, the parts being separated;Fig. 4 a similar view showing the parts assembled and connected; Figs. 5and 6 are views, respectively, of a slightly modified form 0construction; and Fig. 7 is a'- detail in plan of the bottom of one ofthe rings and ribs, showing how the rings and ribs are connected.

In constructing a grate in accordance with our-invention, we provide oneor more rings which are preferably of wrought iron or steel, the ringsbeing conveniently made of wire or band iron or steel. These rings areconveniently and preferably made each of a single circular piece of wireor band iron or steel, as the case may be, the metal being bent tocircular form with the ends in proximity to each other but disconnected.These rings, when more than one is employed, are

Cleveland, in the her and outer concentric rings,

tightly. It will be observed similar to Figs. 3 and 4 other figures,

concentric and are fitted into slots extending I upwardly from thebottom surfaces of the radial ribs and, when theparts are in position,the ribs and bands are secured together by forcing the metal of the ribsinto engagement with the lower surfaces of the rings.

In the form of our invention shown in Figs. 1 to 4 inclusive, 1 and 2denote the inrespectively,

said rings being shown as formed of wire,

the wire being bent to circular shape and the ends being brought intoclose proximity with a slot therebetween, as shown at 1*- and 2%. 3denotes the radial ribs. These ribs are preferably of wrought iron orsteel, such as rolled band iron or band steel and are of the usualshape. Each rib is provided with slots 4 and 5 projecting upwardly fromthe lower surface thereof a greater distance than the diameter of therings 1 and 2 which they are adapted respectively to receive.

For the purpose of enabling the rings to resist the torsional and otherstrains to which they may be subjected, the slots lare of less widththan the diameter of the rings and the rings are grooved or recessed, as

shown at 1 and 2 respectively, to provide a bearing surface for thesides of the slots 4 and 5 and to enable the ribs to grip the rings thatthe tops 4 and 5 of the slots 4 and 5 respectively are rounded in orderto receive and form a fit with the rounded upper surfaces of the rings 1and 2. When the ribs and rings are assembled, with the rings seated inthe upper ends of the rib, slots, the ribs-project a substantialdistance below the bottoms of the rings. In practice, the amount of thisproject-ion need not be more than one-sixteenth of an inch, thisprojection affording a sufficient quantity of metal below the rings tobe punched or otherwise forced into locking engagement'with the rings,as shown more particularly at 6 in Figs. 4 and 7 In Figs. 5 -and 6 thereis shown a cation of the. construction illustrated in the wherein theribs '3 are provided with rectangular slots 7 and 8 adapted to receiverings 9 and 10 of band iron or steel which are rectangular in section.These rings will be assembled in the same manner as the rings 1 and 2,the bottoms of the'ribs being punched or otherwise forced into lockingengagement with the surfaces of the rings, as shown at 119 the lowersurfaces of modifiillustrated and de- -cast iron grates now inpractically universal use. In connecting the rings and ribs, it ispossible to lock these parts together by a single punching operation,providing a punch for each joint between a rib and a ring and operatingall the punches simultaneously to force the metal of the ribs intolooking engagement with the rings.

' Having thus described our invention, what we claim is:

1. As a new article of manufacture, a grate comprising a plurality ofwrought metal rings, each of said rings being discontinuous and havingits ends spaced apart to form a slot, and a plurality of wrought metalribs separate from and interlocked with said rings, the'slots formedbetween the ends of the rings being out of radial alinement.

2. As a new article of manufacture, a grate comprising a plurality ofwrought metal ribs each having an upper and a lower surface and a slotprojecting into the body thereof from one of such surfaces, and awrought metal ring inserted into said slots and interlocked thereby withsaid ribs.

3. A grate comprising a plurality of wrought metal rings and a pluralityof radially extending Wrought metal ribs, said rings being circular incross section between said ribs and said ribs being each provided withslots projecting from a surface thereof and having their ends rounded,the slots being of less width and greater depth than the diameter ofsaid rings, and the rings being provided with opposed grooves formingbearings for the sides of said slots and the metal bounding the slotsbeing forced inwardly into engagement with said rings.

4. A grate comprising a Wrought metal ring and a plurality of wroughtmetal ribs,

said ring being circular in cross section between said ribs and saidribs being provided each with a slot pro ecting upwardly from the lowersurface thereof, the slots being of we have produced a grateless widthand greater depth than the diameter of said ring and the ring beingprovided with opposed grooves forming bearings for the opposed sides ofeach slot and the metal at the lower surface of the ribs bounding theslots being forced inwardly into engagement with said ring.

5. A grate comprising a wrought metal wire ring and a plurality ofwrought metal ribs each having a slot for the reception of said ring,the ring having opposed surfaces adapted to form each an elongatedbearin with a side of a slot, the slots being 0 greater depth than thevertical thickness of the ring and the metal of each rib adjacent to theslot therein being forced inwardly into locking engagement with thebottom of the ring.

\ 6. As a new article of manufacture, a grate comprising a plurality ofwrought metal ribs having upper and lower surfaces and each having aslot projecting into the body thereof from one of such surfaces, thewalls of each slot being parallel, and a wrought metal ring fitted insaid slots and having parallel walls cooperating with the parallel wallsof the slots, the ribs and ring being locked together.

As a new article of manufacture, a grate comprising a plurality ofwrought metal ribs each having an upper and a lower surface and a slotprojecting into the body thereof from one of such surfaces, and a ringadapted to fit in said slots, the slots being of greater depth than thedepth of said ring and the ring being provided with grooves forming abearing with a side of each slot and the width of the ring between saidribs being greater than the width of the slots.

8. A grate comprising a wrought metal ring and a plurality of wroughtmetal ribs each having a slot for the reception of said ring, the ringhaving surfaces adapted to form an elongated bearing with a side of eachslot, the slots being of" greater depth than the vertical thickness ofthe ring and the metal of each rib adjacent to the slot therein beingforced inwardly into locking engagement with the bottom of the mug.

In testimony whereof, we hereunto affix our signatures in the presenceof two witnesses. I

WILLIAM R. J EAVONS. ARNOLD R. WHITTAKER.

l/Vitnesses:

J. B. HULL,

BRENNAN B. WEST.

